Also, the ISO is BLOWN OUT on your image to create the false perception of a well lit scene, you can tell by the significant pixel noise that incredible amounts of digital amplification have been applied to this image.
This is a better approximation of human sight: https://i.imgur.com/djOuoZr.jpg
The image you linked is just so digitally distorted that it's very misleading. Heck, your linked image is so distorted that the sky is literally grey!
There are lots and lots of false positives a self driving car has to disregard just to make its way along any street. Mailboxes on curbs, random parked cars, bridges, signs, and so on. I think the car unfortunately made a bad decision.
To say the LIDAR/RADAR or IR cameras didn't pick the person up is to say that these cars are woefully under-equipped to sense their environment.
I think the Police report was just working off of current operating Police knowledge and expectations of the law.
My overall point is simple, the car almost certainly saw the person - it just had to have, but the way it evaluated what to do about it was wrong because evaluating reality, as it turns out, is incredibly complex.
Picture of where it happened: https://imgur.com/gallery/XQrAB